/********************************************************************
  Class      : SerializableDictionary
  Created by : Ali Özgür
  Contact    : ali_ozgur@hotmail.com
  
  Original code by: Paul Welter (http://weblogs.asp.net/pwelter34/archive/2006/05/03/444961.aspx)
*********************************************************************/
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml.Serialization;
using System.Runtime.Serialization;

namespace PragmaTouchUtils
{
	[XmlRoot("dictionary")]
	[Serializable]
  public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable
	{
		public SerializableDictionary(IDictionary<TKey, TValue> dictionary): base(dictionary)
		{

		}

		public SerializableDictionary()
		{
		
		}


		public System.Xml.Schema.XmlSchema GetSchema()
		{
			return null;
		}

		public void ReadXml(System.Xml.XmlReader reader)
		{
			XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));
			XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));
			bool wasEmpty = reader.IsEmptyElement;
			reader.Read();
			if (wasEmpty)
				return;

			while (reader.NodeType != System.Xml.XmlNodeType.EndElement)
			{
				reader.ReadStartElement("item");
				reader.ReadStartElement("key");
				TKey key = (TKey)keySerializer.Deserialize(reader);
				reader.ReadEndElement();
				reader.ReadStartElement("value");
				TValue value = (TValue)valueSerializer.Deserialize(reader);
				reader.ReadEndElement();
				this.Add(key, value);
				reader.ReadEndElement();
				reader.MoveToContent();
			}

			reader.ReadEndElement();
		}

		public void WriteXml(System.Xml.XmlWriter writer)
		{
			XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));
			XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));

			foreach (TKey key in this.Keys)
			{
				writer.WriteStartElement("item");
				writer.WriteStartElement("key");
				keySerializer.Serialize(writer, key);
				writer.WriteEndElement();
				writer.WriteStartElement("value");
				TValue value = this[key];
				valueSerializer.Serialize(writer, value);
				writer.WriteEndElement();
				writer.WriteEndElement();
			}
		}

	}
}
